Barbed wire



(No Model.)

J. W. GRISWOLD.

BARBED WIRE.

No. 377,252. Patented Jan. 31, 1888.

lA/VEA/TOR dmvfssis;

UNiTnn STATES J. OOL GRISXVOLD, OF TROY, NEW YORK.

BARBED WIRE.

SPECIFICATION forming part of Letters Patent No. 377,252, dated January31, 1888.

Application filed August 10, 1887.

To all whont it may concern:

Be it known that I, J. \VooL GRISWOLD, of Troy, Rensselaer county, NewYork, have invented a new and useful In'iprovei'nent in Barbed \Vire, ofwhich the following is a specification.

My invention relates to barbed wire such as is commonly used for fencingpurposes; and it consists in the combination of a wire cable with theslit and ribbed piece of flat thin metal which forms the barb, as moreparticularly hereinafter set forth.

In the accompanying drawings, Figure 1 represents the thin metal barbseparately. Fig. 2 is a transverse section of the same on the line a: xof 1. Fig. 3 shows cable and barb combined. Fig. 4 is a section of thebarb on the line Y Y of Fig. 3. Fig. 5 is a transverse section of thebarb, showing a rib formed by rolling on both faces ofsaid barb. Fig. 6is a longitudinal section of the barb, showing a rib on both faces andindentations or recesses in said rib. Fig. 7 is asiniilar view showingthe strands of the cable in place in said recesses.

Similar letters of reference indicate like parts.

Longitudinally along the middle line of said barbpieee A is produced arib, B. This rib may be struck up or made by rolling the plate, so as toappear upon one or both sides of this barb-piece. Thus in Figs. 1 to 4it is shown struck up upon one side. In Figs. 5, 6, and 7 it is shownproduced by rolling upon both sides. In said rib may be formed,byremoving or de pressing a portion or portions of said rib,a recess orrecesses, as G, Fig. 6, in which the wire strands may lie, as shown inFig. 7.

The object of the rib B is to strengthen and Serial No. 246,572. (Nomodel.)

ways to bear upon it at its center and at right 5 angles to the rib. Asthe barb-piece is always thus held in proper position,it is notnecessary to rely upon a tight twisting of the wires to secure it inplace.

The object of the slits C D is to receive the strands at their points ofintersection and to allow the parts 1. and 2 of the barbpiece to be bentin respectively opposite directions, sothat the edges produced by saidslits may bear upon the strands. In this \vaythe barb piece is moreclosely grasped and its displace mentis prevented.

I claim 1. A flat metallic barb-piece having a 1011- gitudinal ribprojecting from both sides of said barb, and recesses in said ribadapted to receive two cable-strands, and formed by removing ordepressing portions of.said ribs, substantially as described.

2. A tlat metallic barb-piece having a central longitudinal rib, andslits in its opposite edges disposed at right angles to said rib,substantially as described.

3. In combination with a cable,and held be tween the strands thereof, apointed barbpiece, A, having a rib, B, transverse slits (J D, and bentparts 1 2, substantially as described.

J. VOOL GRISWOLD.

\Vitnesses:

Gno. A. STONE, T. S. Hnrsrnn, Jr.

